Home / 66,415,999.80-99,623,999.70-43,722,521.40

Finding the Fourth Proportional to 66,415,999.80, 99,623,999.70 and 43,722,521.40

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Solution

The fourth proportional to 66,415,999.80, 99,623,999.70 and 43,722,521.40 is: 65,583,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,415,999.80 : 99,623,999.70 = 43,722,521.40 : x
  2. Step 2: Convert to fraction form
    66,415,999.80/99,623,999.70 = 43,722,521.40/x
  3. Step 3: Cross multiply
    66,415,999.80x = 99,623,999.70 × 43,722,521.40
  4. Step 4: Simplify right side
    66,415,999.80x = 4,355,812,458,836,843.50
  5. Step 5: Solve for x
    x = 4,355,812,458,836,843.50/66,415,999.80
  6. Step 6: Final answer
    x = 65,583,782.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.